# -*- coding: utf-8 -*-
"""
Created on Tue Apr 16 12:37:47 2024

@author: 29865
"""

import pandas as pd
data = {'a': [5, 3, 4, 1, 6],
        'c': [4, 6, 5, 5, 6],
        'd': [1, 2, 3, 4, 5]}
Dt=pd.DataFrame(data)
R1=Dt.sum()           	#各列求和
R2=Dt.mean()      		#各列求平均值
R3=Dt.describe()   		#各列做描述性统计